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1 July 2004 Evolution of Resistance Under Insecticide Selection Pressure in Culex pipiens quinquefasciatus (Diptera, Culicidae) from Martinique
Andre Yebakima, Maïte Marquine, Jacques Rosine, Marie-Michele Yp-Tcha, Nicole Pasteur
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Abstract

Population surveys of Culex pipiens quinquefasciatus carried out in 1991 and 1999 were compared with data collected in 1990 before the beginning of the control program against this mosquito. Larval samples collected in 1999 displayed resistance to the four tested insecticides: permethrin, propoxur, temephos, and chlorpyrifos. Temephos resistance ratio at LC50 (RR50) ranged between 8.1- and 42-fold compared with 2.9- and 4.6-fold in 1990, and chlorpyrifos RR50 ranged between 8.6- and 123-fold compared with 6.4- and 19-fold in 1990. This increased resistance to organophosphorus insecticides was associated with a sharp decrease of susceptible genotypes at two loci (Ester and ace-1), as well as to an allele replacement at the Ester locus.

Andre Yebakima, Maïte Marquine, Jacques Rosine, Marie-Michele Yp-Tcha, and Nicole Pasteur "Evolution of Resistance Under Insecticide Selection Pressure in Culex pipiens quinquefasciatus (Diptera, Culicidae) from Martinique," Journal of Medical Entomology 41(4), 718-725, (1 July 2004). https://doi.org/10.1603/0022-2585-41.4.718
Received: 16 December 2003; Accepted: 1 March 2004; Published: 1 July 2004
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